Make httpProxy return a Proxy instead of a Maybe Proxy
Bump version to 0.2.0.0
Update the various auth functions to return an Auth

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extra : amend_source : c8eb9ade531a7b18e4815e608544eb3aaee06ede
Separate httpbin into main and module components

--HG--
rename : httpbin/HttpBin.hs => httpbin/HttpBin/Server.hs
Run tests against local httpbin clone